| 摘要 |
PURPOSE: A gas protection bottle cap is provided to protect mixed gas until the bottle is empty when using liquid mixed with the gas in the bottle, and to prevent an inflow or an outflow of the gas. CONSTITUTION: A gas protection bottle cap comprises a bottle connection unit(4), a pipe(3), and a valve(1). Liquid stored inside the bottle can be discharged by holding the bottle upside down, and operating the valve. Gas mixed with the liquid can not be discharged from the bottle when the bottle is put right, and the valve is closed.
|
